JUPRI, A.; SISPIYATI, R.; CHIN, K. E. An investigation of students’ algebraic proficiency from a structure sense perspective . Journal on Mathematics Education, [S. l.], v. 12, n. 1, p. 147–158, 2021. Disponível em: https://jme.ejournal.unsri.ac.id/index.php/jme/article/view/3736. Acesso em: 31 aug. 2025.